Emil rengert



No. 62l,l37. Patented Mar. l4, I899. E. BENGERT.

ICE VELOCIPEDE.

(Application filed July 80, 1898. (No Model.)

hiinesses EMIL RENGERT, OF FURSTENWALDE, GERMANY.

ICE-VELOCIPEDE.

SPECIFICATION forming" part Of Letters Patent NO. 6331,1327, dated March 14;, 1899. Application filed July 30, 1898. Serial No. 687,337. (No model.)

To all whom it may concern:

Be it known that 1,.EMIL RENGERT, a citizen of the Kingdom of Prussia, and a resident of Fiirstenwalde, (Spree,) in the Kingdom of Prussia and German Empire, have invented certain new and useful Improvements in Bicycle-Sleds, of which the following is a specification.

This invention relates to a new form of a bicycle-sled and means for propelling it.

In the accompanying drawings, Figure 1 represents the new sled in side view. Fig. 2 is a top view of same, the saddle, saddle-support, and the steering fork broken away. Fig. 3 shows in enlarged scale and in elevation the pick by means of whose movement the sled receives its movement. The parts are shown in their relative position when taking hold in the ice. Fig. 4 is the same part, showing the parts in their relative position when releasing the grip of the ice. Fig. 5 shows the same part seen from the front.

A bicycle-like frame is mounted on runners. The axis of each pedal-crank B bears on its prolongation a sprocket-wheel X. Chains Z transmit its motion to other sprocket-wheels V, fixed to the axis A of the fly-wheel 0. Articulated to the ends of the pedal-cranks B are connecting-rods H. Their free ends are connected to guide-blocks F, sliding on bars G, fixed to the frame of the sled. In the hind part of the frame and level with the guide-blocks there is a sprocket-wheel D. A chain E connects the two guide-blocks and is passed around and engages with the sprocketwheel D. The axis of said sprocket-wheel extends downward and bears another sprocketwheel I with a considerably-larger diameter than the first. Another sprocket-wheel I of the same diameter is situated in the fore part of the sled. Both are united by a chain K. Into this chain are inserted guiding-blocks L, which bear the picks by the motion of which the sled is propelled. They slide on guidebars M and are arranged in such a way that one is at one end of its way when the other has reached the other end. If now the pedalcranks be revolved,'areoiprocating motion is imparted to the guide-blocks F, and through the chain connecting both the same motion is communicated to the dilferent sprocketwheels. The chain K joins in this recipro catiu g movement and the guide-blocks L, too. On account of the different diameters of D and I the displacement of the lower blocks L is considerably greater than that of the upper ones.

In the guide-blocks L there is an arrangement which presses the points of the picks into the ice when the block slides in the direction to the rear end of the sled, but which lifts them from the ice when moving forward. For this purpose the chain K is not fixed directly to the body of the block L, but to the cared ends of a loose bard, guided by two upturned ears of the block. A pin 6, project ing to both sides of the bar, limits its motion. Two flanges protrude from the block down ward. At their end an axis a is journaled. Rigidly secured to this axis are two arms I), reaching upward and terminating in slotted heads, into the slots of which engage the ends of the pin 6. Between the flanges, and also rigidly secured to the axis a, extends another arm 0, rectangularly to the former one and directed backward. At its ends it is provided with the sharp points N. If now the chain pulls backward, the slotted arms are also drawn backward and the points N are pressed into the ice. If the forward motion begins, the slotted arms are drawn forward before the motion of the block begins. The points are retired from the surface of the ice and pass forward without touching it.

The sled may be executed in difierent forms, differing somewhat from the described one, but without leaving its principal features. For example, the pedals can be mounted directly on the axle of the fly-wheel.

What I claim is 1. In a bicycle-sled the transmission of power from the pedal-cranks to the axis of a fly-wheel by means of chains and sprocketwheels, the pedals being connected at the same time by connecting-rods to guide-blocks and said guide-blocks to each other by a chain, substantially as shown and described.

2. In a bicycle-sled connecting-rods articulated to the pedals and to guide-blocks, these latter being connected to each other by a chain, slung around a sprocket-wheel, and a second sprocket-wheel of greater diameter being rigidly connected to the former one, substantially as shown and described.

3. In combination in a bicycle sled the frame, the pedals, a sprocket-wheel, a chain connection between the same and the pedals, a second sprocket-wheel rigidly connected to the first, a third sprocket-wheel located at the front part of the machine, the sprocket-chain connection between the second and third sprockets, and means carried by the said lastmentioned sprocket-chain to engage the ice, substantially as described.

4. In combination, in a bicycle sled the frame, the pedals, a sprocket-wheel, a chain connection between the same and the pedals, a second sprocket-wheel rigidly connected to the first, a third sprocket-wheel located at the front part of the machine, the sprocket-chain connection between the second and third sprockets, means carried by the saidlast-mentioned sprocket-chain to engage the ice, and

guide-blocks and guide-rods for the chains, substantially as described.

5. A guide-block, having ears on its upper side and on its lower side flanges pointing downward, and a bar passing through the ears and a pin passing through said bar, substantially as shown and described.

6. A guide-block having flanges pointing downward and an axis journaled near the end of said flange, and an arm with slotted heads fixed rigidly to said axis and another arm directed rectangularly to the former one, and being provided at its end with sharp points, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

EMIL RENGERT.

\Vitnesses:

HENRY IIAsPER, O. H. DAY. 

